How to get a method to call the correct passed object in the constructor

Question

I have 2 constructors for a certain object:
public class ABC{
//variables
private DEF def;
private GHI ghi;
public ABC(DEF def){
this.def = def;
someMethod();
public ABC(GHI ghi){
this.ghi = ghi;
someMethod();
}Now, this someMethod() references / calls a method from the 2 classes passed in the constructor say def.getSome() and ghi.getSome().
Depending on which constructor is used, it should call the respective xxx.getSome(). Do I need to write 2 someMethod()s or is there a way that one method will call the proper xxx.getSome() ?
Thanks.....

Answer 1

Hi
Following the example may be help to you call correct method,
// Interface QuizMaster
public interface QuizMaster {
     public String popQuestion();
// Class StrutsQuizMaster
public class StrutsQuizMaster implements QuizMaster{
     public String popQuestion() {
          return "Are you new to Struts?";
// Class SpringQuizMaster
public class SpringQuizMaster implements QuizMaster{
     public String popQuestion() {
          return "Are you new to Spring?";
// Class QuizMasterService
public class QuizMasterService {
     QuizMaster quizMaster;
     public QuizMasterService(SpringQuizMaster quizMaster){
          this.quizMaster = quizMaster;
     public QuizMasterService(StrutsQuizMaster quizMaster){
          this.quizMaster = quizMaster;
     public void askQuestion()
          System.out.println(quizMaster.popQuestion());
// QuizProgram
public class QuizProgram {
     public static void main(String[] args) {
          // Option : 1
// StrutsQuizMaster quizMaster = new StrutsQuizMaster();
// Option : 2
SpringQuizMaster quizMaster = new SpringQuizMaster();
          QuizMasterService quizMasterService = new QuizMasterService(quizMaster);                    
          quizMasterService.askQuestion();
here you can create object of StrutsQuizMaster or SpringQuizMaster and pass into the QuizMasterService object constructor, base on the object correct method will be called.